Lighting fixture base



FIG. 1 is a perspective view thereof;

FIG. 2 is an elevational view thereof as seen from the front side of FIG. 1;

FIG. 3 is a top plan view thereof, the bottom being a mirror image; and,

FIG. 4 is a right end view in elevation thereof, the left side being a mirror image. 

The ornamental design for a lighting fixture base, as shown and described. 